North American Aviation NA-73X NX19998 with Vance Breese, 26 October 1940 Published on November 26, 2012 in 20 November 1940Full resolution (2319 × 926) Next → North American Aviation’s NA-73X fighter prototype, engine idling, with Vance Breese in the cockpit at Mines Field, Los Angeles, 26 October 1941. (North American Aviation Inc.)